Oil-well rotary fishing tool



Jan. 13, 1931. 'P. c. coREY OIL-WELL ROTARY FISHING TOOL Filed July 19, 1929 Patented'Jan.Y 13.1931 l v PEnoIVALog .oo :aEYpor Los-ANGELES," oAL Iro 1tNIA, As`sIGNoR oEoNE-IHIBDTO JOHN c. MASSEY ANDoNEfTHgIRD :no crrnnrirou'WALLAou' JR., BOTH ,oF Los cALIFoRNIA 1 j L y.

- IQIIJTWELLBOTARY FISHING rrooL pp1iaee'fnled 'filly-19,1192@ 'Seial' Mireya 'This inyention relates to foil Well riishin-g fishing tool includes-primarily a barrel`vr V tools and the general object of the invention l, slips 2, 'a Inandrel', slip holding Ineans 4, V y

is to provide a'fishing toolfconrstructed a-manclrel clutch '5, an'dyvashingmeans 6 1- n arranged 'to be 'jarredloosefrom the-fish The barrel'` l "isfmade `intwo sections,v a

5 when 'die lllf C PIKHJO bev rmpved bythe( lower tubular shell section Tandlan upper ftd-1 .55 i

too1 f -4 bularsectionthe upper end of thefloy'verf- "A more particular' Vobject is-top'royide a "sectionbeingscrewgseate'd on l-thfe lower ed clutchina fishing tool of thetrip slip 'socket Of'ithe upperfsection by 'meansoffthreadsj-Q' type, whereby vthe toolf'm'ay 'be jarredY 'loose and the sections are Vlockedagainstturning by the tool.

15 drawing which fQrI'IJSapartof-lthisspecifisuch'v diameter: as'toprovide` a loose slidingf65.

'Y the slipsraised and expanded'fto jslipoyer which are detachablyfint'erlo'ckedqs.together 'Y Zotheqfsh* i 'i by a longitudinaltongue ahd1grooyevl4 '7 Fig. 2 is a longitudinal sectionof y-myiis'hl and a longitudinaltongue 15. and groove'.

i 3o FigsSis a cross section oftheflishingtool conical seatflO thelowerend ofthe barrel f engagingthe slips. v Y 4o Fig. 10" 's 'a View lilIe'fFig,v 91 except.- that tthebarrel 1:by screws' 26`for-the.. purpose of cation and'inwhi'ch, y ft vf orfthe mandrel-therein and formlabearf Fig. l isa vertical llon-gitudinal sectionfof ing -for s 'the' mandrel,- and .the section v'8 is,-

a fishing toolembodying my inventionvyith made in twosemiitublri vparts-.511" and' 12 ing tool' as showy-n in l1` ig.rll with the -slips The lower' end of the uppetubular"sectionS contracted and the' slip j aws in?V gripping posi-n isformed WithJ-an internal annularghead l? l' T L'Hr-through theopeningin"whichtheslowefpo'ry Y l tion Whengripping the fish."

I 26 Fig. 3 is a cross vsection ofthe tool tion 'of the. mandrel 3 r'eciiprocatesiv .OnetheY 75g* line3-3 ofFigQl...

i .upper'end of the upper section 8 of the barrel:k Fig, 4 is 'a' cross sectionof theitool taken on 1 is screw-seated aicap 1 8ion. ,which isforrnd line llfiofc' Fig.` 1 .li a I A 5 `a packing box 19 through which reciprocates f "Fig. 5 is across-section ofthe fishing tool #thefupprendofjthe mandrelff ""f' i I n Y fTheslipfsQarezeac'hformed with a-reinQO, '80 Fig. '6 is across -sectin offthefshing tool .er a jawezll on thelowerendof therein land a takenion:line.fffof'Figi1.n i. vhead ,-22jonthe upper. end'ofthe rein. vThey Y jFig.--'7 lis a crossisection ofstheshing tool ,jawsiofthe-.slip are'each formedfwithanex-x I .taken 'on line 7;? of Fig. El. `ternale'inclined vsurface l23 lfor:engaging the takenon line 8-.8 of Fig.`1. 1 l for contracting theja'ws upon-thefish.y The Fig. 9is'a cross section of'theitooltaken.onk reins 20ofstheslips are' provided with .notches line 9'-.9 of Fig. l showing .the mandreldogs 24 .ortliepurposehereinafter described. A.

bridge-25l is secured in Ythe Ylower"sectiongf` of` o the `'mandrel is shown rotated untilthe.dogsl 'limiting the distance to Whichthe fish may j Y are disengaged -rom the slips. .enter the.: lower end'of the barrel; thebri'dge f Fig. 11 is a View .partlyfinelevation and-beingproVided .With gudeways .127'- through ipartly in section of the slip vholding means. '.:Whichthe slip reinsQO slide Whereby'fthe slips-f 45 --Fig. 12 is a .fragmentary Vcrticalsection arepositionedand guided." ini the l'oWersec- 5 f i Lof the slip vholding'-means..y itionofthefbarrel. f

Fig..13 is an insideyiewof one, ofthe parts- Dogs2851f0r engaging the .slip notches24, v of the upper SeCtOIlof the barrel. are .mounted on a'collar 29" which is screw -Corresponding parts are. designated byuthe.A seated on the :lower end .ofthe mandrelr'.

Y periphery of the collar 29 and are formed with depending tongues 30 and shoulders 31, said shouldersresting upon the lower walls 32 of said recesses and said tongues depending loosely through apertures 33 in -said lower recesswalls, there vbeing pins 34 extendingthrough the lowerl ends of said` tongues vfor maintaining the dogs in the collar 29.

, .Asshocking hammer head 3.5 is screwseated, on thelower portion'iof the .mandrel'f 3 at 36 for striking against either the slip heads 22 or against the head 17 of the upper barrel section.

The mandrel clutch 5 comprises afpairot lugs 37 extending diametrically moutward from the Ymandrel and adapted to ,slide ,in internalv longitudinal grooves: 38 in the upper section 8 ofl the'barrel 1 and adapted It0 bei.

turned 'whenthezmandrel is'rturnedy into notches- 39 .or 'intom progressive-ly stepped notches 40, 41 and 42 formed in said section andleading from. saidvgrooves, for thev purpo'se'hereinafter described. The-grooves 38 extend throughfthe. upper vend ot-*the vbarrel section .8" to receive' theY lugs 37' so that the mandrel'3 may'beintrod-uced into the barrel or removed therefromthrough @the upper' end thereof.,- i y Y t,

Y f The mandrel'. 3 .v is ormedfw'ith a tapered threaded pin 43 for -engaging a threaded box (not shown) onthe lowerend .ofa rotary drill stem forilowering the'jtool'into `a well. The

Y mandrel 3 Y provided zwith fa longitudinal washingbore'44, intotheflower end 'of which extends .an extension pipe 45,1 therefbeing a stutling box 46 inthe lower end of the Vmandrel: throughwhi'chsaid pipeextends.l v=On the lower end of the'pipe45 is secured a spiderk v 47 in the.arinsfofiwhichare journale'd rollers 48 for 'engaging the :inner surfaces of the sl'rpj reins.-

lows 1:

The 'clutch lugs 37 being engaged` notches-39 and the dogs 28 being engaged with theslip, notches 24andfholding the slips 2 elevated (Flgfl) thetool islowered'into the bottom of al well until the jaws-210i the slips v 2 slipo'verV the ish (not shown) in the bottom ofthe well; they upper'vv fend* of the fish engaging the spider 47 and raising the extension wash pipe 45` andthe bridge 253 being adapted to engagehe upper end ofthe fish tozlimitthe downward movement of the tool over "the fish.r Water. may thenY be circulated through-the mandrel'bore 44 andV extensionpipe 45 aroundthe fish towash the. samesofthat it Amay be readily gripped by the slip Jaws 21. The mandrel 3 is then rotatedslightly by the rotary drill t'ubeuntibV the lugs 37 disengage the notche's'39and register with the`grooves'38 and thedogs 2 3 disengage theslip notches 24 (Fig. 9) whereupon the slips 2and thel mandrel 3 drop by lfltilty util'the conicalfsurfaces"'23 of the? r-'Iclaimasmy v .The operationof my fishing.. tool isasfol'f drel elevated in said'barrel, slip-engaging meansjon said mandrel vforholding said 'slips "elevated, with their'jaws .expandedtereff conical seat 10,into effective gripping engagement with. .the ..Sh..-1. The mandrel is the turned until thejclutch 'lug-S 37 pass into one ofthe notches 40,41 0142 according vto ythe distance thevslips are drivenrdown to kgrip the `lish,'whieh distance is determined by theoutside diameter of the lish.V Upon liftlng the mandrel, the lugs 34, engaging the upper edge ofV one of the notches 40, 41 or.42, will causethewhole tool with the fish to be llifted out of the well. i.

If itshouldnot be possible to -reinovev thev Y fish theV mandrel may be turned cminterl clockwise. until the clutch lugs 37 disengage the notches .40, 41 or 442andvregister. with the grooves k38and upon liftinguthe mand-rel suddenlyso that the.Y collar29 engages the 'under sides' 50.03,?V the slip-heads 22-the slipsmay be jarredlooseand raised in thebarrel until the slip aws releasethe fish... .The tool` Vmay then be raised outof' the well upon lifting the mandrel which will engage themandrel hammer 35 with theheadl( of thebarrel 1 and cause the barrel and ialLparts mounted.

thereon to be ,lifted With the 'mandrel out of the Well.

fdo'noi-J ofthis specification intend to coverfmy,V invention in whatever fformitmay .be .em-- bodied.' .Q s j 11. In 1a, iishing tool, a' barrel-,slips mountlimit, myginvention .to kthe exact `form herein shown and describedbecause it; :may be embodied infother iorms and itnis to be understood` thatini-.andby the claims ed in said barrel, a mandrelyfinounted l in'.v

said barrel, a clutch 4for holding 'said' manceive the' fish, whenV the .mandrel is held ele`- Vated by said clutch,.means for releasingsaid@ elutchiand saidV slip engaging'fmeans to allow. said slips to drop ini saidbarrehgmeans for contracting'theja'ws ofl the slipsto grip the ishfwhe'nthe slipswdrop yin said barrel, a hammer on said mandrel forf-engagingsaid slips to drive. th/.jaws against said conf. traoting means" intoe'ecti-ve gripping position with the iish,andfmeans whereby said 2.*In aishing tool, ai barrel, slipsmount- .ed in said barrel, a mandrelimount'ed in .said barrel, ='a.iclutch for holdingsaid mandrel .elevatedin saidbarrel, slip engaging'means on said mandreljforholdingsaid slips ele- Vated, .with .their 'j aws: 'eXpaIldel l?? recit-Vg clutch mayengage the'barrel orelevating ythe tool with the iish gripped-thereby'. l

thefish, when the mandrel is held elevated by said clutch, means for releasing said clutch and said slip engaging means to allow said slips to drop in said barrel, means Y for contracting the jaws of the slips to grip the fish lwhen the slips drop in said barrel, al hammery on said mandrel for engaging said slips to drive the jaws against said contracting means into effective gripping posi- 4tion with the lish, and means vwhereby said Clutch may engage the barrel for elevating .the tool withthe fish gripped thereby and jarring means for jarring and driving saidY slips upwardly for releasing the slip jaws* from the fish whenthe fish cannot Vbe rejmoved by the tool.

slip'jaws, said slips having notches,P dogs1 on said mandrel for engaging said notches c jaws contracted when-the lugs of said clutch for holding the slips elevated and their are engaged with certain of saidclutch is turned lto disengagevsaid clutch lugs from said clutch notches and to bring said lugs ,y into register with said longitudinal grooves,

a hammer on said mandrelfor. strikingthe upper ends ofsaid slips for driving said slips downwardly so that their jaws at their lower ends will be contracted Vbyfktheir en-v e Y gagement with said conical seat'ito grip'the iish'when the mandrel is moved upV and ,l down withsaid clutch lugs sliding in said longitudinal` grooves, said other clutchl .Y Y

Vfish whenthe iish cannot-be remove' arev` engaged with certain of said clutch A notches extending from said longitudinal j.

grooves, said dogs being arranged to dis'- engage said slip notches when the mandrel is turned to disengage said clutchlugs from said clutch notches andv to vbring said` lugs into vregister Vwith said longitudinal grooves,

a hammer on said mandrel for strikingvthe'y 1 upper ends of said slipsffo-r driving Asaid slips downwardly so that theirjaws at their lower ends will be contracted yby their engagement with said conical seat to grip the fish `when the mandrel fi's moved. up and down with said clutch lugs sliding in said longitudinal grooves, said Y'other clutch` notches being'arranged to be jengagedfby said'clutch lugs'when the mandrelis turned so thatthe tool may be raised to remove the gripped iish'when the mandrel is elevated and jarring 'means' vfor jarringand driving said slips upwardly torelease said jaws from the PERCIVAL `c. l. CQREY,

Y feo l 1 notches extending from vsaid longitudinal v grooves, said dogs being arranged to disengage -said slip vnotches when the. mandrel Y ieo notches being arrangedV to be engaged byv said clutch lugs when the mandrel is turned so that the tool may be raised to removethe.

gripped sh when the mandrel is elevated.

4. In a ishing tool, a barrel formed at` its i lower end with a conical seat and in its upper portion with longitudinal grooves and drel slidable through the upper end of said barrel, a clutch including `saidnotches and lugs on said mandrel adapted toslide in notches extending from said grooves, a man- Y i said grooves and to engage saidcnotches,

Vslips slidable in the lower portion of said barrel, and engageable at their lower ends 'Y with` said conical seat Yfor contracting the slip jaws, said slips-havingfnotches, j l -on said mandrel for engaging said notches for holding the slips elevated and theirl ,jawscontracted'whenthelugsof said clutch dogs 

